HSD springs are sold in pairs only (2 springs per pair). HSD springs rates range from 4-26kg are 200mm long x 65mm internal diameter & 90mm external diameter. They are built to the exacting high-end specifications required for HSD Coilovers and also may suit other Coilover brands. HSD springs are interchangeable, so changing your springs to a different spring rate will enable you to alter the feel and handling of your car. Firmer springs are more sporty and softer springs more comfortable.
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